also: ジュニアウエルター
noun
junior welterweight
Boxing weight class between lightweight and welterweight; also called super lightweight or light welterweight. Loanword from English.
彼はジュニアウェルター級のチャンピオンだ。
He is the junior welterweight champion.
Borrowed from English 'junior welter' (junior welterweight), a boxing weight class designation.